Rug making apparatus



June 5, 1934. T. G. MERWITZ 1,961,505

RUG MAKING APPARATUS Filed Dec. 1, 1932 3 Sheets-Sheet l y 46 INVENTOR. v 2%6080/"6 Gljlferwiz y 12v I ATTORNEY.

June 5,1934. T G MERWITZ 1,961,505

RUG MAKING APPARATUS Filed Dec. 1. 1952 3 Shets-Sheet 2 INVENTOR.

A TTORNE Y.

June 1934. T. G. MERWITZ RUG MAKING APPARATUS Filed Dec. 1, 1932 s Sheets-Shegt s jwaZZorGl/I/ez-wag BY A TT 0RNEY.

Patented June 5, 1934 UNITED STATES PATENT OFFICE 10 Claims.

The invention relates to improvements in apparatus for making rugs and the like and has for its primary object the provision of a simple and efficient apparatus of the character indicated by means of which attractive and efiicient rugs may be quickly and economically produced.

Another object of the invention is the provision of improved apparatus of the character indicated, capable of attachment to and use in conjunction with an ordinary sewing machine.

The invention consists in the combinations and arrangements of parts hereinafter described and. claimed.

The invention will be best understood by reference to the accompanying drawings forming a part of this specification and in which Fig. 1 is a partial front view of a sewing ma chine equipped with an attachment or adjunct by means of which such rugs may be economically produced and embodying an exemplification of the apparatus involved;

stantially on line 4-4 of Fig. 2 is a top-plan view of the same;

Fig. 3, an enlarged section taken substantially on line 3-3 of Fig. 1;

Fig. 4, an enlarged partial section taken sub- Fig. 2;

Fig. 5, an enlarged section taken substantially on line 5-5 of Fig. 1;

Fig. 6, an enlarged view taken substantially on line 6-'-6 of Fig. 1 with portions broken away for the sake of clearness; 1

Fig. 7, a view similar to Fig. 6 but showing the parts in different relative positions;

' Fig. 8, a horizontal section taken substantially on line 8-8 of Fig. '7;

Fig. 9, a vertical section taken substantially on line 9-9 of Fig. '1;

Fig. 10, a vertical section taken just to the front of the plan of the view Fig. 9 and illustrating the rug in the course of manufacture;

Fig. 11, a view similar to Fig. 8 but showing the rug in the course of manufacture;

Fig. 12, a top-plan view of a small section or portion of a completed rug; and

Fig. 13, a transverse section of the same.

The embodiment of the apparatus illustrated in the drawings comprises a coil guide member 20 mounted on the sewing machine in place of the usual presser foot thereof, said coil guide being provided with an upwardly and forwardly inclined coil receiving portion 21. The coil guide 20 is provided at its rear with a central slot 22 through which the needle 23 of the sewing machine operates in the usual manner.

Associated with the coil guide 20-21 is a strand guide 24 in the form of an upwardly ex tending, downwardly tapering short tube having its lower end bent inwardly into overlapping relation with the portion 21 of the coil guide as 69 shown. Strands 25 of cotton, wool or other desired tread material are led through suitable guides as' indicated 'to and through the guide tube 24 into co-operating relationship with the coil guide 21. The guide tube 24 is carried by a vertically reciprocating rod 26 sliding freely in a guide tube 27 and provided at its upper'end with an operating head 28 connected by a pin 29 with a slot 30 and one arm of a bell crank lever 31 fulcrumed at 32 on the head of the sewing machine. The other end of the bell crank lever 31 has a slot and pin connection 33 with a rocker arm 34 which, in turn, is connected by means of a slide rod 35 with a link 36 connected with a crank pin 37 on the usual revolving disc or wheel 38 of the sewing machine and whereby the bell crank lever 31 will be oscillated to cause vertical reciprocations of the rod 26 in the guide tube 27 and corresponding movements of the guide tube 24. Y

The crank pin 37 is also connected by a link 39 with a needle bar 40 in the usual way to cause vertical reciprocations of the needle bar 40 in the normal operation of the sewing machine.

At its upper end the guide tube 2'7 is provided with a supporting head 41 pivoted on a stud bolt 42 on the front of the sewing machine head, a coiled spring 43 'being also mounted as shown on saidstud bolt and connected with head 41 so as to hold the strand guide 24 in its inoperative position as shown inFlg. 1.' The guide tube 27 is oscillated laterally by means of an operating rod 44 fitting into anoperating tube 45 having a head 46 slidable in a guide 47- on the front of the sewing machine head, as best shown in Figs. 5 1 and 2.

The head 46 carries two rollers 48 operating on opposite sides of a cam member 49 on the usual shaft of the sewing machine and whereby the head 46 will be caused to reciprocate laterally as the shaft revolves in the usual way. A latch lever 50 is pivotally connected at 51 with the operating rod 44 and fits between ears 52 on a block 53 secured to the tube 45 as best shown in Figs. 1 and 3. The lever 50 is provided in its underside witli a notch 54 engaging a cross-screw 55 so as to lock the rod 44 and the tube 45 in operative relationship. A keeper member 56 is provided to prevent accidental displacements of said A latchin lever.

The arrangement of the parts is such that as the sewing machine operates in its usual way, the strand guide 24 will be caused to revolve in an elliptical path as indicated by the arrows in Fig. 10, around the upturned end 21 of the coil guide and whereby the protruding ends of the strands 25 will be coiled or wrapped around the end 21 as indicated in Fig. 10.

Two bent feed fingers 57, best shown in Figs. 6, '7 and 10, are pivotally mounted on the head of the machine by means of pivot screws 58 as shown. The feed fingers 57 are operatively connected by links 59 with a block 60 secured to the needle bar 40 so that when the needle bar 40 reciprocates vertically in its normal operations, the feed fingers 57 will be caused to oscillate vertically as indicated in Figs. 6 and 7. The upturned end 21 of the coil guide is provided in its forward end adjacent each side thereof with slots 61 to receive the ends of the feed fingers 57 as 'best indicated in Fig. 8, said feed fingers thus operating at each motion of the needle bar 40 to feed or push the coils downwardly along the upturned end 21 of the coil guide.

Notches 62 are provided in the edges of the coil guide to prevent retrograde movements of the strand coils. Thus at each reciprocation of the sewing machine needle, a coil or loop of strand material will be formed around the coil guide 21 and this loop pushed downwardly and rearwardly thereon past the notches 62 with whch it engages to prevent retrograde movement. The coils or loops 63 of the tread material thus formed and fed along the coil guide are best shown in Figs. 10 and 11.

Rearwardly divergent slitting knives 64 are arranged as best shown in Figs. 8, 9, l0 and 11 in the opposite sides of the coil guide just to the rear of the needle 23 so that as the coils 63 are thus pushed or fed rearwardly on the coil guide, the opposite ends of the loops or coils will be severed by the action of the knives 64 to form separate tread strands 65, as indicated. As will be noted in Fig. 11, the needle 23 is positioned slightly in front of the knives 64 so that a line of stitching 66 will be formed extending through both sides of the loops or coils thus formed and securing said loops to a backing sheet 67 being fed through the sewing machine. The arrangement is such that as the backing sheet 67 is fed through the machine, a band of tread material consisting of a multitude of strands will be formed and stitched centrally to the backing sheet but having their ends free to constitute suitable tread material for a rug. To complete the rug a series of such bands are applied to the rug in parallel relation as indicated in Figs. 12 and 13, thereby forming a complete tread for the rug by thus covering the entire or desired surface of the backing sheet with such tread material. Obviously, also, various figures and arrangements of these parallel bands of tread material may be utilized to impart artistic and ornamental design and appearance to the rugs. Obviously, also, either a single strand .or various numbers of strands of tread material may be employed as desired.

The ordinary sewing machine feeder 68 may be utilized in the usual way for feeding the backing sheet 67' through the machine which may be supplemented if desired by other feeding means acting on the backing sheet.

When it is desired to render the rug making attachment inoperative, all that is necessary is to throw the latch lever 50 into the dotted line position indicated in Fig. 1 whereupon the tube 44 will slide idly on rod 44 and.the strand guide thus rendered inoperative.

While I have illustrated and described the preferred form of apparatus, this is capable of variation and modification without departing from the spirit of the invention. I, therefore, do not wish to be limited to the precise details of construction set forth but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

I claim:

1. A machine of the class described comprising a sewing machine equipped with work feeding means to feed a backing sheet therethrough; a coil guide arranged above said feed'ng means and slotted for the passage of the sewing machine needle; a strand guide and means for revolving said strand guide around said coil guide to form a strand coil thereon; coil feeding means arranged to feed said coil along saidcoil gu'de and through the sewing machine in unison with said sheet; and divergent stationary knives at the sides of said coil guide severing the ends of the loops of said col as they are stitched to said sheet.

2. A machine of the class described comprising a sewing machine equipped with work feeding means to feed a backing sheet therethrough; a coil guide arranged above said feeding means and slotted at its rear for the passage of the sewing machine needle and provided at its front with slots adjacent each side thereof to receive feeding fingers; a strand guide and means for revolving said strand guide around said coil guide to form a strand coil thereon; coil feeding fingers mounted and connected to oscillate into and out of said front slots to feed said co.l along said coil guide and through the sewing machine in unison with said sheet; and knives at the sides of said coil guide severing the loops of said coil as they are stitched to said sheet.

3. A machine of the class described comprising i ranged to feed said coil along said coil guide and through the sewing machine in unison with said sheet; and rearwardly divergent knives protruding laterally from the sides of said coil guide severing the loops of said coil as they are stitched to said sheet.

4. A machine of the class described comprising a sewing machine equipped with work feeding means to feed a backing sheet therethrough; a coil guide arranged above said feeding means and slotted at its rear for the passage of -the sewing machine needle and provided at its front with slots adjacent each side thereof to receive feeding fingers; a strand guide and means for revolving said strand guide around said coil guide to form a strand coil thereon; coil feeding fingers mounted and connected to oscillate into and out of said front slots to feed said coil along said coilguide and through the sewing machine 'in unison with said sheet; and rearwardly divergent knives protruding laterally from the sides of said coil guide severing the loops of said coil as they are stitched to said sheet. I

5. A machine of the class described comprising a sewing machine equipped with work feeding means to feed a backing sheet therethrough; a coil guide arranged above said feeding means and slotted for the passage of the sewing machine needle; a strand guide in front of said coil guide in the form of an upwardly and forwardly extending tube having its lower end bent rearwardly to overlap said coil guide; a vertically reciprocating pivoted mounting for the upper end of, said strand guide; means for laterally reciprocating the lower end of said strand guide to cause it to revolve around said coil guide; coil feeding means arranged to feed said coil along said coil guide and through the sewing machine in unison with said sheet; and knives at the sides of said coil guides severing the loops of said coil as they are stitched to said sheet.

6. A machine of the class described comprising a sewing machine equipped with work feeding means to feed a backing sheet therethrough; a coil guide arranged above said feeding means and slotted at its rear for the passage of the sewing machine needle and provided at its front with slots adjacent each side thereof to receive feeding fingers; a strand guide in front of said coil guide in the form of an upwardly and forwardly extending tube having its lower end bent rearwardly to overlap said coil guide; a vertically reciprocating pivoted mounting for the upper end of said strand guide; means for laterally reciprocating the lower end of said strand guide to cause it to revolve around said coil guide; coil feeding fingers mounted and connected to oscillate into and out of said front slots to feed said coil along said coil guide and through the sewing machine in unison with said sheet; and knives at the sides of said coil guides severingthe loops of said coil as they are stitched to said sheet.

'7. A machine of the class described comprising a sewing machine equipped with work feeding means to feed a backing sheet therethrough; a coil guide arranged above said feeding means and slotted for the passage of the sewing machine needle; a strand guide in front of said coil guide in the form of an upwardly and forwardly extending tube having its lower end bent rearwardly to overlap said coil guide; a vertically reciprocating pivoted mounting for the upper end of said strand guide; means for laterally reciprocating the lower end of said strand guide to cause it to revolve around said coil guide; coil feeding means arranged to feed said coil along said coil guide and through the sewing machine in unison with said sheet; and rearwardly divergent knives protruding laterally from the sides of said coil guide severing the loops of said coil as they are stitched to said sheet.

8. A machine of the class described comprising a sewing machine equipped with work feeding means to feed .a backing sheet therethrough; a coil guide arranged above said feeding means and slotted at its rear for the passage of the sewing machine needle and provided at its front with slots adjacent each side thereof to receive feeding fingers; a strand guide in front of said coil guide in the form of an upwardly and forwardly extending tube having its lower end bent rearwardly to overlap said coil guide; a vertically reciprocating pivoted mounting for the upper end of said strand guide; means for laterally reciprocating the lower end of said strand guide to cause it to revolve around said coil guide; coil feeding fingers mounted and connected to oscillate into and out of said front slots to feed said coil along said coil guide and through the sewing machine in unison with said sheet; and rearwardly divergent knives protruding laterally from the sides of said coil guide severing the loops of said coil as they are stitched to said sheet.

9. A machine of the class'described, comprising a sewing machine; automatic means for forming and delivering a coil of strand material in f co -operative relation with the surface of a backing sheet passing through said sewing machine and in such relation thereto that the line of stitches will secure both sides of each of theloops of said coil to said sheet intermediate their ends;

and divergent stationary knives on said machine in the path of said coil whereby said coil passes over said knives and the ends of the loops are severed thereby.

10. A machine of the class described, comprising a sewing machine; automatic means for form ing and delivering a coil of strand material in co-operative relation with the surface of a backing sheet passing through said sewing machine and in such relation thereto that the line of stitches will secure both sides of each of the loops of said coil to said sheet intermediate their ends; divergent "stationary knives on said machine in the path of said coil whereby said coil passes over said knives and the ends of the loops are severed thereby; and means, independent of the backing sheet, for forcibly feeding said coils past said knives.

THEODORE G. MERWITZ. 

